Function cli_format_output 

pub fn cli_format_output(
    value: Value,
    jsonl: bool,
    json: bool,
    jq: Option<&str>,
) -> Result<String, Box<dyn Error>>

Format CLI output according to output flags.

• jsonl: one JSON object per line for array values
• json: machine-readable JSON (no whitespace)
• jq: filter using jaq (jq implemented in Rust, no external binary needed)
• Default: pretty-printed JSON